Let $v = 7 j$ And Let U Be a Vector with Length

question 39

Multiple Choice

Let $v = 7 j$ and let u be a vector with length $5$ that starts at the origin and rotates in the xy - plane. Find the maximum value of the length of the vector $| \mathbf { u } \times \mathbf { v } |$ .

• A) \(| \mathbf { u } \times \mathbf { v } | = 5\)
• B) \(| \mathbf { u } \times \mathbf { v } | = 7\)
• C) \(| \mathbf { u } \times \mathbf { v } | = 35\)
• D) \(| \mathbf { u } \times \mathbf { v } | = 157\)
• E) \(| \mathbf { u } \times \mathbf { v } | = 1\)

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